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There are two systems in operation for delivery of Real Time data streams to RTPP contributors.
UDPRelay is operated by NRCan and delivers data from approximately 80 stations to authorised users, using standardised data formats and the UDP protocol. An archiver application (RTIGSA) can decode the streams and create binary files that can be converted to RINEX using the TEQC application. An RT-IGS Multicast Receive Software (RTIGSMR) receives the RTIGS data stream and provides users with a framework to develop applications. Further information is available at architecture.php.
In the BKG NTRIP infrastructure, the data sources (receivers) transmit their data to the broadcast servers using the NtripServer application. A number of NtripCasters serve data to users in different communities using the HTTP protocol. The IGS Caster serves as the RTIGS-NTRIP Interface for the IGS Pilot Project. It disseminates data for nearly 150 stations, mainly in RTCM3 and RTIGS formats. A small number of stations transmit in various flavours of RTCM2. Ntrip server and Ntrip client software for various operating systems is available under GPL. Further information can be found at http://igs.bkg.bund.de/index_ntrip.htm.
NTRIP Tools: Open Source NTRIP software is available from the Subversion server software.rtcm-ntrip.org. This includes POSIX ntripclient/server programs, multi-stream BKG Ntrip Client/Server programs, a RTCMv3 encoder/decoder for observations and proposed State Space Representation messages, and a RTCMv3 to RINEX converter. A bug tracker system allows you to inform authors about software problems that you may detect.
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